1 /**
2 * Simple Edje example illustrating perspective functions.
3 *
4 * You'll need at least one Evas engine built for it (excluding the
5 * buffer one). See stdout/stderr for output.
6 *
7 * @verbatim
8 * edje_cc perspective.edc && gcc -o edje-perspective edje-perspective.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
9 * @endverbatim
10 */
11
12 #ifdef HAVE_CONFIG_H
13 # include "config.h"
14 #else
15 # define EINA_UNUSED
16 #endif
17
18 #ifndef PACKAGE_DATA_DIR
19 #define PACKAGE_DATA_DIR "."
20 #endif
21
22 #include <Ecore.h>
23 #include <Ecore_Evas.h>
24 #include <Edje.h>
25
26 #define WIDTH 480
27 #define HEIGHT 320
28
29 static const char commands[] = \
30 "commands are:\n"
31 "\tDown - move part down\n"
32 "\tUp - move part up\n"
33 "\tLeft - move part left\n"
34 "\tRight - move part right\n"
35 "\tPrior - move part up-left\n"
36 "\tNext - move part down-right\n"
37 "\tInsert - increase focal\n"
38 "\tSuppr - decrease focal\n"
39 "\tEsc - exit\n"
40 "\th - print help\n";
41
42 struct _App {
43 Evas_Object *edje_obj;
44 Evas_Object *bg;
45 Edje_Perspective *ps;
46 Eina_Bool animating;
47 int x, y; // relative position of part in the screen
48 int focal;
49 };
50
51 static void
_on_destroy(Ecore_Evas * ee EINA_UNUSED)52 _on_destroy(Ecore_Evas *ee EINA_UNUSED)
53 {
54 ecore_main_loop_quit();
55 }
56
57 /* here just to keep our example's window size and background image's
58 * size in synchrony */
59 static void
_on_canvas_resize(Ecore_Evas * ee)60 _on_canvas_resize(Ecore_Evas *ee)
61 {
62 int w, h;
63 struct _App *app = ecore_evas_data_get(ee, "app");
64
65 ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
66 evas_object_resize(app->bg, w, h);
67 evas_object_resize(app->edje_obj, w, h);
68 }
69
70 static void
_part_move(struct _App * app,int dx,int dy)71 _part_move(struct _App *app, int dx, int dy)
72 {
73 char emission[64];
74
75 if (app->animating)
76 return;
77
78 app->x += dx;
79 app->y += dy;
80 if (app->x > 1)
81 app->x = 1;
82 if (app->x < 0)
83 app->x = 0;
84 if (app->y > 1)
85 app->y = 1;
86 if (app->y < 0)
87 app->y = 0;
88
89 snprintf(emission, sizeof(emission), "move,%d,%d", app->x, app->y);
90 edje_object_signal_emit(app->edje_obj, emission, "");
91 app->animating = EINA_TRUE;
92 }
93
94
95 static void
_on_bg_key_down(void * data,Evas * e EINA_UNUSED,Evas_Object * o EINA_UNUSED,void * event_info)96 _on_bg_key_down(void *data, Evas *e EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *event_info)
97 {
98 struct _App *app = data;
99 Evas_Event_Key_Down *ev = event_info;
100
101 if (!strcmp(ev->key, "h"))
102 {
103 printf(commands);
104 return;
105 }
106 // just moving the part and text
107 else if (!strcmp(ev->key, "Down"))
108 {
109 _part_move(app, 0, 1);
110 }
111 else if (!strcmp(ev->key, "Up"))
112 {
113 _part_move(app, 0, -1);
114 }
115 else if (!strcmp(ev->key, "Left"))
116 {
117 _part_move(app, -1, 0);
118 }
119 else if (!strcmp(ev->key, "Right"))
120 {
121 _part_move(app, 1, 0);
122 }
123 else if (!strcmp(ev->key, "Prior"))
124 {
125 _part_move(app, -1, -1);
126 }
127 else if (!strcmp(ev->key, "Next"))
128 {
129 _part_move(app, 1, 1);
130 }
131 // adjusting the perspective focal point distance
132 else if (!strcmp(ev->key, "KP_Add"))
133 {
134 app->focal += 5;
135 edje_perspective_set(app->ps, 240, 160, 0, app->focal);
136 edje_object_calc_force(app->edje_obj);
137 }
138 else if (!strcmp(ev->key, "KP_Subtract"))
139 {
140 app->focal -= 5;
141 if (app->focal < 5)
142 app->focal = 5;
143
144 edje_perspective_set(app->ps, 240, 160, 0, app->focal);
145 edje_object_calc_force(app->edje_obj);
146 }
147 // exiting
148 else if (!strcmp(ev->key, "Escape"))
149 ecore_main_loop_quit();
150 else
151 {
152 printf("unhandled key: %s\n", ev->key);
153 printf(commands);
154 }
155 }
156
157 static void
_animation_end_cb(void * data,Evas_Object * o EINA_UNUSED,const char * emission EINA_UNUSED,const char * source EINA_UNUSED)158 _animation_end_cb(void *data, Evas_Object *o EINA_UNUSED, const char *emission EINA_UNUSED, const char *source EINA_UNUSED)
159 {
160 struct _App *app = data;
161
162 app->animating = EINA_FALSE;
163 }
164
165 int
main(int argc EINA_UNUSED,char * argv[]EINA_UNUSED)166 main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
167 {
168 const char *edje_file = PACKAGE_DATA_DIR"/perspective.edj";
169 struct _App app;
170 Ecore_Evas *ee;
171 Evas *evas;
172
173 if (!ecore_evas_init())
174 return EXIT_FAILURE;
175
176 if (!edje_init())
177 goto shutdown_ecore_evas;
178
179 edje_frametime_set(1.0 / 60.0);
180
181 /* this will give you a window with an Evas canvas under the first
182 * engine available */
183 app.animating = EINA_FALSE;
184 app.x = 0;
185 app.y = 0;
186 app.focal = 50;
187
188 ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
189 if (!ee) goto shutdown_edje;
190
191 ecore_evas_callback_destroy_set(ee, _on_destroy);
192 ecore_evas_callback_resize_set(ee, _on_canvas_resize);
193 ecore_evas_title_set(ee, "Edje Perspective Example");
194
195 ecore_evas_data_set(ee, "app", &app);
196
197 evas = ecore_evas_get(ee);
198
199 app.bg = evas_object_rectangle_add(evas);
200 evas_object_color_set(app.bg, 255, 255, 255, 255);
201 evas_object_resize(app.bg, WIDTH, HEIGHT);
202 evas_object_focus_set(app.bg, EINA_TRUE);
203 evas_object_show(app.bg);
204
205 evas_object_event_callback_add(app.bg, EVAS_CALLBACK_KEY_DOWN, _on_bg_key_down, &app);
206
207 app.edje_obj = edje_object_add(evas);
208
209 edje_object_file_set(app.edje_obj, edje_file, "example/group");
210 evas_object_move(app.edje_obj, 0, 0);
211 evas_object_resize(app.edje_obj, WIDTH, HEIGHT);
212 evas_object_show(app.edje_obj);
213
214 edje_object_signal_callback_add(app.edje_obj, "animation,end", "", _animation_end_cb, &app);
215
216 app.ps = edje_perspective_new(evas);
217 edje_perspective_set(app.ps, 240, 160, 0, app.focal);
218 edje_perspective_global_set(app.ps, EINA_TRUE);
219
220 printf(commands);
221
222 ecore_evas_show(ee);
223
224 ecore_main_loop_begin();
225
226 ecore_evas_free(ee);
227 ecore_evas_shutdown();
228 edje_shutdown();
229
230 return EXIT_SUCCESS;
231
232 shutdown_edje:
233 edje_shutdown();
234 shutdown_ecore_evas:
235 ecore_evas_shutdown();
236
237 return EXIT_FAILURE;
238 }
239